<template>
  <div class="app-container">

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          v-hasPermi="['system:menu:add']"
          type="primary"
          @click="handleAdd"
        >添加权限</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="info"
          icon="el-icon-sort"
          @click="toggleExpandAll"
        >展开/折叠</el-button>
      </el-col>
    </el-row>

    <el-table
      v-if="refreshTable"
      v-loading="loading"
      :data="menuList"
      row-key="menuId"
      :default-expand-all="isExpandAll"
      :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
    >
      <el-table-column
        prop="name"
        label="菜单名称"
        align="left"
        :show-overflow-tooltip="true"
      />
      <el-table-column prop="icon" label="图标" align="center">
        <template slot-scope="scope">
          <svg-icon :icon-class="scope.row.icon" />
        </template>
      </el-table-column>
      <el-table-column
        prop="sort"
        label="排序"
        align="center"
      />
      <el-table-column
        prop="permission_alias"
        label="权限标识"
        align="center"
        :show-overflow-tooltip="true"
      />
      <el-table-column
        prop="view"
        label="组件路径"
        align="center"
        :show-overflow-tooltip="true"
      />
      <el-table-column prop="status" label="状态" align="center">
        <template slot-scope="scope">
          <p>{{ STATUS[scope.row.status] }}</p>
        </template>
      </el-table-column>
      <el-table-column label="创建时间" align="center" prop="created_at">
        <template slot-scope="scope">
          <span>{{ scope.row.created_at }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        align="center"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="scope">
          <el-button
            v-hasPermi="['system:menu:edit']"
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
          >修改</el-button>
          <el-button
            v-hasPermi="['system:menu:add']"
            size="mini"
            type="text"
            icon="el-icon-plus"
            @click="handleAdd(scope.row)"
          >新增</el-button>
          <el-button
            v-hasPermi="['system:menu:delete']"
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改菜单对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="680px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="100px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级菜单" prop="parentId">
              <treeselect
                v-model="form.parent_id"
                :options="menuOptions"
                :normalizer="normalizer"
                :show-count="true"
                placeholder="选择上级菜单"
              />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="菜单类型" prop="menuType">
              <el-radio-group v-model="form.type">
                <!--                <el-radio label="M">目录</el-radio>-->
                <el-radio :label="1">菜单</el-radio>
                <el-radio :label="2">按钮</el-radio>
                <el-radio :label="3">普通页面</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col v-if="isMenuType" :span="24">
            <el-form-item label="菜单图标" prop="icon">
              <el-popover
                placement="bottom-start"
                width="460"
                trigger="click"
                @show="$refs['iconSelect'].reset()"
              >
                <IconSelect
                  ref="iconSelect"
                  :active-icon="form.icon"
                  @selected="selected"
                />
                <el-input
                  slot="reference"
                  v-model="form.icon"
                  placeholder="点击选择图标"
                  readonly
                  clearable
                >
                  <svg-icon
                    v-if="form.icon"
                    slot="prefix"
                    :icon-class="form.icon"
                    style="width: 25px"
                  />
                  <i
                    v-else
                    slot="prefix"
                    class="el-icon-search el-input__icon"
                  />
                  <i slot="suffix" class="el-icon-circle-close" style="cursor:pointer;" @click.stop="onClearIcon" />
                </el-input>
              </el-popover>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="菜单名称" prop="name">
              <el-input v-model="form.name" placeholder="请输入菜单名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="sort">
              <el-input-number
                v-model="form.sort"
                controls-position="right"
                :min="0"
              />
            </el-form-item>
          </el-col>
          <el-col v-if="isMenuType || isPageType" :span="12">
            <el-form-item prop="path">
              <span slot="label">
                <el-tooltip
                  content="访问的路由地址，对应.vue文件的name，如：`User`"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                路由地址
              </span>
              <el-input v-model="form.path" placeholder="请输入路由地址" />
            </el-form-item>
          </el-col>
          <el-col v-if="isMenuType || isPageType" :span="12">
            <el-form-item prop="view">
              <span slot="label">
                <el-tooltip
                  content="访问的组件路径，如：`system/user/index`，默认在`views`目录下"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                组件路径
              </span>
              <el-input v-model="form.view" placeholder="请输入组件路径" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item prop="permission_alias">
              <el-input
                v-model="form.permission_alias"
                placeholder="请输入权限标识"
                maxlength="100"
              />
              <span slot="label">
                <el-tooltip
                  content="控制器中定义的权限字符，如：@PreAuthorize(`@ss.hasPermi('system:user:list')`)"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                权限字符
              </span>
            </el-form-item>
          </el-col>
          <!--          <el-col v-if="form.type == 'C'" :span="12">
            <el-form-item prop="query">
              <el-input
                v-model="form.query"
                placeholder="请输入路由参数"
                maxlength="255"
              />
              <span slot="label">
                <el-tooltip
                  content="访问路由的默认传递参数，如：`{&quot;id&quot;: 1, &quot;name&quot;: &quot;ry&quot;}`"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                路由参数
              </span>
            </el-form-item>
          </el-col>-->
          <!--          <el-col v-if="form.type == 'C'" :span="12">
            <el-form-item prop="isCache">
              <span slot="label">
                <el-tooltip
                  content="选择是则会被`keep-alive`缓存，需要匹配组件的`name`和地址保持一致"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                是否缓存
              </span>
              <el-radio-group v-model="form.isCache">
                <el-radio label="0">缓存</el-radio>
                <el-radio label="1">不缓存</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>-->
          <el-col :span="12">
            <el-form-item prop="status">
              <span slot="label">
                <el-tooltip
                  content="选择隐藏则路由将不会出现在侧边栏，并且无法访问"
                  placement="top"
                >
                  <i class="el-icon-question" />
                </el-tooltip>
                菜单状态
              </span>
              <el-radio-group v-model="form.status">
                <el-radio
                  v-for="dict in statusColumn"
                  :key="dict.value"
                  :label="dict.value"
                >{{ dict.label }}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item prop="api_url">
              <span slot="label">接口地址</span>
              <el-input v-model="form.api_url" placeholder="请输入接口地址" />
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="cancel">取 消</el-button>
        <el-button type="primary" @click="submitForm">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  listMenu,
  getMenu,
  delMenu,
  addMenu,
  updateMenu,
  STATUS
} from '@/api/system/menu'
import Treeselect from '@riophae/vue-treeselect'
import '@riophae/vue-treeselect/dist/vue-treeselect.css'
import IconSelect from '@/components/IconSelect'

export default {
  name: 'Menu',
  components: { Treeselect, IconSelect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 菜单表格树数据
      menuList: [],
      // 菜单树选项
      menuOptions: [],
      STATUS,
      // 菜单状态单选数据源
      statusColumn: [],
      // 弹出层标题
      title: '',
      // 是否显示弹出层
      open: false,
      // 是否展开，默认全部折叠
      isExpandAll: false,
      // 重新渲染表格状态
      refreshTable: true,
      // 查询参数
      queryParams: {
        menuName: undefined,
        visible: undefined
      },
      // 表单参数
      form: {
        parent_id: undefined,
        type: 1, // 1-菜单 2-按钮 3-普通页面
        icon: undefined,
        name: undefined,
        path: undefined,
        view: undefined,
        permission_alias: undefined,
        status: 1, // 1:显示，2：隐藏,
        api_url: undefined
      },
      // 表单校验
      rules: {
        name: [
          { required: true, message: '菜单名称不能为空', trigger: 'blur' }
        ],
        sort: [
          { required: true, message: '菜单顺序不能为空', trigger: 'blur' }
        ],
        path: [
          { required: true, message: '路由地址不能为空', trigger: 'blur' }
        ]
      }
    }
  },
  computed: {
    isMenuType() {
      return this.form.type === 1
    },
    isButtonType() {
      return this.form.type === 2
    },
    isPageType() {
      return this.form.type === 3
    }
  },
  created() {
    this.getList()
    this.setStatusColumn()
  },
  methods: {
    // 清空图标
    onClearIcon() {
      this.form.icon = undefined
    },
    // 选择图标
    selected(name) {
      this.form.icon = name
    },
    /** 查询菜单列表 */
    getList() {
      this.loading = true
      listMenu(this.queryParams).then((data) => {
        // 树组件需要menuId、menuName属性
        data.forEach(e => {
          const { id, name } = e
          e.menuId = id
          e.menuName = name
        })
        this.menuList = this.handleTree(data, 'id', 'parent_id')
        console.log(this.menuList)
        this.loading = false
      })
    },
    /** 转换菜单数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children
      }
      return {
        id: node.menuId,
        label: node.menuName,
        children: node.children
      }
    },
    /** 查询菜单下拉树结构 */
    getTreeselect() {
      listMenu().then(data => {
        this.menuOptions = []
        const menu = { menuId: 0, menuName: '主类目', children: [] }
        // 树组件需要menuId、menuName属性
        data.forEach(e => {
          const { id, name } = e
          e.menuId = id
          e.menuName = name
        })
        menu.children = this.handleTree(data, 'id', 'parent_id')
        console.log('getTreeselect()====', menu)
        this.menuOptions.push(menu)
      })
    },
    /** 设置菜单状态数据源 */
    setStatusColumn() {
      for (const key in STATUS) {
        this.statusColumn.push({
          value: Number(key),
          label: STATUS[key]
        })
      }
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.reset()
    },
    // 表单重置
    reset() {
      this.form = {
        parent_id: undefined,
        type: 1, // 1-菜单 2-按钮
        icon: undefined,
        name: undefined,
        path: undefined,
        view: undefined,
        permission_alias: undefined,
        status: 1, // 1:显示，2：隐藏
        url: undefined,
        api_url: undefined
      }
      this.resetForm('form')
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList()
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm('queryForm')
      this.handleQuery()
    },
    /** 新增按钮操作 */
    handleAdd(row) {
      this.reset()
      this.getTreeselect()
      if (row != null && row.menuId) {
        this.form.parent_id = row.menuId
      } else {
        this.form.parent_id = 0
      }
      this.open = true
      this.title = '添加菜单'
    },
    /** 展开/折叠操作 */
    toggleExpandAll() {
      this.refreshTable = false
      this.isExpandAll = !this.isExpandAll
      this.$nextTick(() => {
        this.refreshTable = true
      })
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset()
      this.getTreeselect()
      getMenu({
        id: row.id
      }).then((data) => {
        this.form = data
        this.open = true
        this.title = '修改菜单'
      })
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs['form'].validate((valid) => {
        if (valid) {
          if (this.form.id != undefined) {
            updateMenu(this.form).then((response) => {
              this.$modal.msgSuccess('修改成功')
              this.open = false
              this.getList()
            })
          } else {
            addMenu(this.form).then((response) => {
              this.$modal.msgSuccess('新增成功')
              this.open = false
              this.getList()
            })
          }
        }
      })
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$modal
        .confirm('是否确认删除名称为"' + row.name + '"的数据项？')
        .then(function() {
          return delMenu({
            id: row.id
          })
        })
        .then(() => {
          this.getList()
          this.$modal.msgSuccess('删除成功')
        })
        .catch(() => {})
    }
  }
}
</script>
